I absolutely fell in love with the Carboy Cleaner after I tried it for the first time. I used about a gallon of water and a few scoops of oxi-clean and the sediment was blasted off the inside of the walls. Two cons: the pads wore out too fast (1 year and approx. 30 uses), exposing the rigid plastic sleeves inside and it didn't reach the shoulder and neck of the carboy very well. But what i do love about it is that it took off the "ring" of sediment like nobody's business.
I am about to purchase the Clean Bottle Express before I reorder new pads for the Carboy Cleaner. After watching the demo video: http://www.thirdcoastdesignworks.com/Products.html
it appears to do a nice job reaching those areas I mentioned earlier. If it is more durable than the Carboy Cleaner i will be hooked forever! I'll try to remember to update this thread after I have had the opportunity to give it a few "spins"! ha-ha, pun intended!